191136916 has 48 divisors (see below), whose sum is σ = 365783040. Its totient is φ = 87034880.

The previous prime is 191136871. The next prime is 191136919. The reversal of 191136916 is 619631191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191136919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498861 + ... + 499243.

It is an arithmetic number, because the mean of its divisors is an integer number (7620480).

Almost surely, 2^191136916 is an apocalyptic number.

It is an amenable number.

191136916 is a deficient number, since it is larger than the sum of its proper divisors (174646124).

191136916 is a wasteful number, since it uses less digits than its factorization.

191136916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 622 counting only the distinct ones).

The product of its digits is 8748, while the sum is 37.

The square root of 191136916 is about 13825.2275207318. The cubic root of 191136916 is about 576.0340972935.

The spelling of 191136916 in words is "one hundred ninety-one million, one hundred thirty-six thousand, nine hundred sixteen".